Microsoft claims Motorola Mobility is over-charging for use of its patents, in a complaint to European Union competition authorities. The move is viewed as an attack on Google, which is in the process of buying Motorola.

South Africa's Econet Wireless is suing Bharti Airtel for $3.1 billion (€2.3 billion), claiming it was frozen out of the decision to sell what is now Airtel Nigeria to the Indian operator. A local court ruled Bharti’s holding is void as a result.

A research firm suggests a link between the growing popularity of smartphones and a rise in cases of identity theft in the US. Thefts grew 13% to 12 million in 2011, Javelin Strategy & Research claims.